{"product_id":"siemens-ef3b040-circuit-breaker","title":"Siemens | EF3B040 | Circuit Breaker | 40A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens EF3B040 Circuit Breaker is a dependable protection solution designed for three-phase electrical systems. With a 40A rating and a 600V maximum, it delivers reliable overcurrent protection while fitting into Siemens-compatible panels and configurations. This unit is ideal for maintenance, retrofit, and replacement tasks where exact specifications matter, ensuring you keep critical equipment safeguarded and online.\u003c\/p\u003e \u003ch2\u003eKey selling points\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact part reference:\u003c\/strong\u003e EF3B040 is the best compatibility reference for replacements, reducing guesswork and ensuring a proper fit.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design:\u003c\/strong\u003e Provides balanced protection across all three phases, essential for three-phase distribution and equipment protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600V rating:\u003c\/strong\u003e Suitable for industrial environments that operate at higher voltage levels, delivering dependable interruption when needed.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance and retrofit ready:\u003c\/strong\u003e A straightforward option for upgrading or refreshing existing Siemens-based electrical systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear identification:\u003c\/strong\u003e Explicit amperage (40A) and configuration help quick verification during installation or inventory checks.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eSpecifications at a glance\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 40A\u003c\/li\u003e \u003cli\u003ePoles: 3-Pole\u003c\/li\u003e \u003cli\u003eVoltage: 600V\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePractical use cases\u003c\/h2\u003e\n\u003cp\u003eUse this breaker for routine maintenance in service or distribution panels, retrofitting older installations to modern 3-pole 600V protection, or replacing wear-prone components in Siemens-compatible equipment. It’s well-suited for facilities that rely on consistent, predictable circuit protection for three-phase loads.\u003c\/p\u003e \u003ch2\u003eOrdering with confidence\u003c\/h2\u003e\n\u003cp\u003eNotes: Confirm fit and ratings before ordering. The part number EF3B040 serves as the most reliable reference to ensure compatibility with your panel or distribution setup.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46424821104802,"sku":"EF3B040","price":310.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/siemens-ef3b040-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}